Half coke (also known as semi coke) structure is block-like, the particle size is generally divided into coke powder 0-6 mm, small material 6-18 mm, medium material 18-35 mm, large material 35-80 mm, light black color. Semi coke is made of refined coal blocks, is a new type of carbon material, its fixed carbon high, high specific resistance, high chemical activity, low ash content, low aluminum, low sulfur, low phosphorus, in order to gradually replace metallurgical coke and widely used in the production of calcium carbide, ferroalloy, ferrosilicon, silicon carbide and other products, become a more cost-effective carbon material. Semi coke can replace metallurgical coke and is widely used in chemical, smelting, gas and other industries.